Ingredients

3 cups blackberries

1/4 cup mint leaves (optional)

1/4 cup honey

Finely grated rind of 1 lime

2 tablespoons lime juice

Parchment paper

Instructions

Preheat oven to 170F.

Place blackberries, mint leaves, honey, lime rind and lime juice in a food processor or blender. Process until smooth, about 30 seconds. (If you are not a fan of seeds, strain the purée as best as you can.)

Cover a baking sheet with parchment paper. Pour purée onto paper and spread thickly and evenly with a spatula. Bake 6 hours, or until no longer wet.